<template>
    <div class="shopcar-container">
        <div class="goods-list">

            <!-- 商品列表区域 -->
            <div class="mui-card" v-for="(item, i) in goodslist" :key="item.id">
				<div class="mui-card-content">
					<div class="mui-card-content-inner">
						<mt-switch v-model="$store.getters.getGoodsSelected[item.id]"
                        @change="selectedChanged(item.id, $store.getters.getGoodsSelected[item.id])"></mt-switch>
                        <img :src="item.thumb_path" alt="">
                        <div class="info">
                            <h1>{{item.title}}</h1>
                            <p>
                                <span class="price">￥{{item.sell_price}}</span>
                                <numbox :initcount="$store.getters.getGoodsCount[item.id]" :goodsid="item.id"></numbox>
                                <!-- 问题：如何从购物车中获取商品的数量呢 -->
                                <!-- 1.我们可以先创建一个空对象，然后循环购物车中所有商品的数据，把当前循环这条商品的id，作为对象的属性名，count值作为对象的属性值，这样，当把所有商品循环一遍，就会得到一个对象：{88:2,55:3，77:1} -->

                                <a href="#" @click.prevent="remove(item.id,i)">删除</a>
                            </p>
                        </div>
					</div>
				</div>
			</div>

            <!-- 商品结算区域 -->
            <div class="mui-card">
				<div class="mui-card-content">
					<div class="mui-card-content-inner jiesuan">
						<div class="left">
                            <p>总计（不含运费）</p>
                            <p>已勾选商品
                                 <span class="red">
                                     {{$store.getters.getGoodsCountAndAmount.count}}
                                </span> 件，总价 ￥
                                <span class="red">
                                    {{$store.getters.getGoodsCountAndAmount.amount}}
                                    </span></p>
                        </div>
                        <mt-button type="danger">去结算</mt-button>
					</div>
                    
				</div>
			</div>

        </div>
        <p>{{$store.getters.getGoodsSelected}}</p>
    </div>
</template>

<script>
import { Toast } from 'mint-ui'
import numbox from '../subcomponents/shopcar_numbox.vue'
export default {
    data () {
        return {
            goodslist:[] //购物车中所有商品的数据
        }
    },
    created () {
        this.getGoodsList()
    },
    methods: {
        getGoodsList() {
            // 1.获取到store中所有商品的id，然后拼接出一个用逗号分隔的字符串
            var idArr = [];
            this.$store.state.car.forEach(item => 
                idArr.push(item.id));
            //如果购物车中没有商品，则直接返回，不需要请求数据接口，否则会报错
            if (idArr.length <= 0) {
                return;
            } 
            console.log(idArr)
            // 获取购物车商品列表
            this.$http.get('api/goods/getshopcarlist/' + idArr.join(',')).then(result => {
                if (result.body.status === 0) {
                    this.goodslist = result.body.message
                } else {
                    Toast('获取购物车商品列表数据失败。。。')
                }
            })
        },
        remove(id, index) {
            // 点击删除，把商品从store中根据传递的id删除，把当前组件中的goodslist中，对应要删除的那个商品，使用index来删除
            this.goodslist.splice(index,1);
            this.$store.commit('removeFormCar', id)
        },
        selectedChanged(id, val) {
            // 每当点击开关，把最新的开关状态，同步到store中
            console.log(id + '======' + val)
            this.$store.commit('updateGoodsSelected', {id, selected: val})
        }

    },
    components: {
        numbox
    }
}
</script>

<style lang="scss" scoped>
.shopcar-container {
    background-color:#eee;
    overflow: hidden;
    .goods-list {
        .mui-card-content-inner {
            display: flex;
            align-items: center;
        }
        img {
            width: 60px;
            height: 60px;
        }
        h1 {
            font-size: 13px;
        }
        .info {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            .price {
                color: red;
                font-weight: bold;
            }
        }
    }
    .jiesuan {
        display: flex;
        justify-content: space-between;
        align-items: center;
        .red {
            color: red;
            font-weight: bold;
            font-size: 16px;
        }
    }
}
</style>